-77.24% is the change from 312 to 71
Calculation steps:
[( 71 - 312 ) ÷ 312] x 100 = -77.24%
Formula
Percentage change = [(71 - 312) / 312] x 100
Subtract the new number by the original number
71 - 312 = -241
-241 ÷ 312 = -0.7724358974358975
-0.7724358974358975 x 100 = -77.24%