-17.81% is the change from 775 to 637
Calculation steps:
[( 637 - 775 ) ÷ 775] x 100 = -17.81%
Formula
Percentage change = [(637 - 775) / 775] x 100
Subtract the new number by the original number
637 - 775 = -138
-138 ÷ 775 = -0.17806451612903226
-0.17806451612903226 x 100 = -17.81%