-83.2% is the change from 482 to 81
Calculation steps:
[( 81 - 482 ) ÷ 482] x 100 = -83.2%
Formula
Percentage change = [(81 - 482) / 482] x 100
Subtract the new number by the original number
81 - 482 = -401
-401 ÷ 482 = -0.8319502074688797
-0.8319502074688797 x 100 = -83.2%