-82.08% is the change from 452 to 81
Calculation steps:
[( 81 - 452 ) ÷ 452] x 100 = -82.08%
Formula
Percentage change = [(81 - 452) / 452] x 100
Subtract the new number by the original number
81 - 452 = -371
-371 ÷ 452 = -0.8207964601769911
-0.8207964601769911 x 100 = -82.08%