-61.61% is the change from 211 to 81
Calculation steps:
[( 81 - 211 ) ÷ 211] x 100 = -61.61%
Formula
Percentage change = [(81 - 211) / 211] x 100
Subtract the new number by the original number
81 - 211 = -130
-130 ÷ 211 = -0.6161137440758294
-0.6161137440758294 x 100 = -61.61%