-21.82% is the change from 628 to 491
Calculation steps:
[( 491 - 628 ) ÷ 628] x 100 = -21.82%
Formula
Percentage change = [(491 - 628) / 628] x 100
Subtract the new number by the original number
491 - 628 = -137
-137 ÷ 628 = -0.21815286624203822
-0.21815286624203822 x 100 = -21.82%