-20.06% is the change from 628 to 502
Calculation steps:
[( 502 - 628 ) ÷ 628] x 100 = -20.06%
Formula
Percentage change = [(502 - 628) / 628] x 100
Subtract the new number by the original number
502 - 628 = -126
-126 ÷ 628 = -0.20063694267515925
-0.20063694267515925 x 100 = -20.06%