-83.16% is the change from 481 to 81
Calculation steps:
[( 81 - 481 ) ÷ 481] x 100 = -83.16%
Formula
Percentage change = [(81 - 481) / 481] x 100
Subtract the new number by the original number
81 - 481 = -400
-400 ÷ 481 = -0.8316008316008316
-0.8316008316008316 x 100 = -83.16%