I don't doubt it is on the rise again but the percentage is probably high because the total number of tests is quite low. There is no blanket testing done anymore, I would assume most tests are being done when you suspect you might have something, so its only logical the percentage is higher than it used to be.
Maybe blanket-testing is calling it a bit more than what it was but there were countries that required negative tests for certain things, e.g. entering stores or swimming pools. You had to show a negative test no matter if you had symptoms or not, and that result was registered centrally.
Everyone? No, far from it. But many events, some jobs, etc. required a negative test result for entry. There was absolutely far more asymptomatic getting tested then.
There were times when people were getting tested at the airports. The tests were mandatory. You could know how many people out of how many from a flight from a country tested positive.