-80.43% is the change from 414 to 81
Calculation steps:
[( 81 - 414 ) ÷ 414] x 100 = -80.43%
Formula
Percentage change = [(81 - 414) / 414] x 100
Subtract the new number by the original number
81 - 414 = -333
-333 ÷ 414 = -0.8043478260869565
-0.8043478260869565 x 100 = -80.43%