-89.21% is the change from 751 to 81
Calculation steps:
[( 81 - 751 ) ÷ 751] x 100 = -89.21%
Formula
Percentage change = [(81 - 751) / 751] x 100
Subtract the new number by the original number
81 - 751 = -670
-670 ÷ 751 = -0.8921438082556591
-0.8921438082556591 x 100 = -89.21%