-39.61% is the change from 871 to 526
Calculation steps:
[( 526 - 871 ) ÷ 871] x 100 = -39.61%
Formula
Percentage change = [(526 - 871) / 871] x 100
Subtract the new number by the original number
526 - 871 = -345
-345 ÷ 871 = -0.3960964408725603
-0.3960964408725603 x 100 = -39.61%