-70.85% is the change from 271 to 79
Calculation steps:
[( 79 - 271 ) ÷ 271] x 100 = -70.85%
Formula
Percentage change = [(79 - 271) / 271] x 100
Subtract the new number by the original number
79 - 271 = -192
-192 ÷ 271 = -0.7084870848708487
-0.7084870848708487 x 100 = -70.85%