-88.11% is the change from 681 to 81
Calculation steps:
[( 81 - 681 ) ÷ 681] x 100 = -88.11%
Formula
Percentage change = [(81 - 681) / 681] x 100
Subtract the new number by the original number
81 - 681 = -600
-600 ÷ 681 = -0.8810572687224669
-0.8810572687224669 x 100 = -88.11%