-41.22% is the change from 871 to 512
Calculation steps:
[( 512 - 871 ) ÷ 871] x 100 = -41.22%
Formula
Percentage change = [(512 - 871) / 871] x 100
Subtract the new number by the original number
512 - 871 = -359
-359 ÷ 871 = -0.4121699196326062
-0.4121699196326062 x 100 = -41.22%