-72.45% is the change from 294 to 81
Calculation steps:
[( 81 - 294 ) ÷ 294] x 100 = -72.45%
Formula
Percentage change = [(81 - 294) / 294] x 100
Subtract the new number by the original number
81 - 294 = -213
-213 ÷ 294 = -0.7244897959183674
-0.7244897959183674 x 100 = -72.45%