-64.18% is the change from 871 to 312
Calculation steps:
[( 312 - 871 ) ÷ 871] x 100 = -64.18%
Formula
Percentage change = [(312 - 871) / 871] x 100
Subtract the new number by the original number
312 - 871 = -559
-559 ÷ 871 = -0.6417910447761194
-0.6417910447761194 x 100 = -64.18%