-75.96% is the change from 337 to 81
Calculation steps:
[( 81 - 337 ) ÷ 337] x 100 = -75.96%
Formula
Percentage change = [(81 - 337) / 337] x 100
Subtract the new number by the original number
81 - 337 = -256
-256 ÷ 337 = -0.7596439169139466
-0.7596439169139466 x 100 = -75.96%