-20.16% is the change from 620 to 495
Calculation steps:
[( 495 - 620 ) ÷ 620] x 100 = -20.16%
Formula
Percentage change = [(495 - 620) / 620] x 100
Subtract the new number by the original number
495 - 620 = -125
-125 ÷ 620 = -0.20161290322580644
-0.20161290322580644 x 100 = -20.16%