-25.43% is the change from 865 to 645
Calculation steps:
[( 645 - 865 ) ÷ 865] x 100 = -25.43%
Formula
Percentage change = [(645 - 865) / 865] x 100
Subtract the new number by the original number
645 - 865 = -220
-220 ÷ 865 = -0.2543352601156069
-0.2543352601156069 x 100 = -25.43%