-70.22% is the change from 272 to 81
Calculation steps:
[( 81 - 272 ) ÷ 272] x 100 = -70.22%
Formula
Percentage change = [(81 - 272) / 272] x 100
Subtract the new number by the original number
81 - 272 = -191
-191 ÷ 272 = -0.7022058823529411
-0.7022058823529411 x 100 = -70.22%