-30.82% is the change from 902 to 624
Calculation steps:
[( 624 - 902 ) ÷ 902] x 100 = -30.82%
Formula
Percentage change = [(624 - 902) / 902] x 100
Subtract the new number by the original number
624 - 902 = -278
-278 ÷ 902 = -0.3082039911308204
-0.3082039911308204 x 100 = -30.82%