-33.06% is the change from 620 to 415
Calculation steps:
[( 415 - 620 ) ÷ 620] x 100 = -33.06%
Formula
Percentage change = [(415 - 620) / 620] x 100
Subtract the new number by the original number
415 - 620 = -205
-205 ÷ 620 = -0.33064516129032256
-0.33064516129032256 x 100 = -33.06%