-70.59% is the change from 272 to 80
Calculation steps:
[( 80 - 272 ) ÷ 272] x 100 = -70.59%
Formula
Percentage change = [(80 - 272) / 272] x 100
Subtract the new number by the original number
80 - 272 = -192
-192 ÷ 272 = -0.7058823529411765
-0.7058823529411765 x 100 = -70.59%