-82.78% is the change from 871 to 150
Calculation steps:
[( 150 - 871 ) ÷ 871] x 100 = -82.78%
Formula
Percentage change = [(150 - 871) / 871] x 100
Subtract the new number by the original number
150 - 871 = -721
-721 ÷ 871 = -0.8277841561423651
-0.8277841561423651 x 100 = -82.78%