-17.59% is the change from 773 to 637
Calculation steps:
[( 637 - 773 ) ÷ 773] x 100 = -17.59%
Formula
Percentage change = [(637 - 773) / 773] x 100
Subtract the new number by the original number
637 - 773 = -136
-136 ÷ 773 = -0.1759379042690815
-0.1759379042690815 x 100 = -17.59%