-15.58% is the change from 764 to 645
Calculation steps:
[( 645 - 764 ) ÷ 764] x 100 = -15.58%
Formula
Percentage change = [(645 - 764) / 764] x 100
Subtract the new number by the original number
645 - 764 = -119
-119 ÷ 764 = -0.15575916230366493
-0.15575916230366493 x 100 = -15.58%