-64.64% is the change from 871 to 308
Calculation steps:
[( 308 - 871 ) ÷ 871] x 100 = -64.64%
Formula
Percentage change = [(308 - 871) / 871] x 100
Subtract the new number by the original number
308 - 871 = -563
-563 ÷ 871 = -0.6463834672789897
-0.6463834672789897 x 100 = -64.64%