-77.69% is the change from 363 to 81
Calculation steps:
[( 81 - 363 ) ÷ 363] x 100 = -77.69%
Formula
Percentage change = [(81 - 363) / 363] x 100
Subtract the new number by the original number
81 - 363 = -282
-282 ÷ 363 = -0.7768595041322314
-0.7768595041322314 x 100 = -77.69%