-89.19% is the change from 749 to 81
Calculation steps:
[( 81 - 749 ) ÷ 749] x 100 = -89.19%
Formula
Percentage change = [(81 - 749) / 749] x 100
Subtract the new number by the original number
81 - 749 = -668
-668 ÷ 749 = -0.8918558077436582
-0.8918558077436582 x 100 = -89.19%