-17.58% is the change from 637 to 525
Calculation steps:
[( 525 - 637 ) ÷ 637] x 100 = -17.58%
Formula
Percentage change = [(525 - 637) / 637] x 100
Subtract the new number by the original number
525 - 637 = -112
-112 ÷ 637 = -0.17582417582417584
-0.17582417582417584 x 100 = -17.58%