-77.12% is the change from 354 to 81
Calculation steps:
[( 81 - 354 ) ÷ 354] x 100 = -77.12%
Formula
Percentage change = [(81 - 354) / 354] x 100
Subtract the new number by the original number
81 - 354 = -273
-273 ÷ 354 = -0.7711864406779662
-0.7711864406779662 x 100 = -77.12%