-78.17% is the change from 371 to 81
Calculation steps:
[( 81 - 371 ) ÷ 371] x 100 = -78.17%
Formula
Percentage change = [(81 - 371) / 371] x 100
Subtract the new number by the original number
81 - 371 = -290
-290 ÷ 371 = -0.7816711590296496
-0.7816711590296496 x 100 = -78.17%