-20.22% is the change from 628 to 501
Calculation steps:
[( 501 - 628 ) ÷ 628] x 100 = -20.22%
Formula
Percentage change = [(501 - 628) / 628] x 100
Subtract the new number by the original number
501 - 628 = -127
-127 ÷ 628 = -0.20222929936305734
-0.20222929936305734 x 100 = -20.22%