-28.57% is the change from 637 to 455
Calculation steps:
[( 455 - 637 ) ÷ 637] x 100 = -28.57%
Formula
Percentage change = [(455 - 637) / 637] x 100
Subtract the new number by the original number
455 - 637 = -182
-182 ÷ 637 = -0.2857142857142857
-0.2857142857142857 x 100 = -28.57%