-75.66% is the change from 871 to 212
Calculation steps:
[( 212 - 871 ) ÷ 871] x 100 = -75.66%
Formula
Percentage change = [(212 - 871) / 871] x 100
Subtract the new number by the original number
212 - 871 = -659
-659 ÷ 871 = -0.756601607347876
-0.756601607347876 x 100 = -75.66%