-75.6% is the change from 332 to 81
Calculation steps:
[( 81 - 332 ) ÷ 332] x 100 = -75.6%
Formula
Percentage change = [(81 - 332) / 332] x 100
Subtract the new number by the original number
81 - 332 = -251
-251 ÷ 332 = -0.7560240963855421
-0.7560240963855421 x 100 = -75.6%