-30.31% is the change from 871 to 607
Calculation steps:
[( 607 - 871 ) ÷ 871] x 100 = -30.31%
Formula
Percentage change = [(607 - 871) / 871] x 100
Subtract the new number by the original number
607 - 871 = -264
-264 ÷ 871 = -0.3030998851894374
-0.3030998851894374 x 100 = -30.31%