-86.98% is the change from 622 to 81
Calculation steps:
[( 81 - 622 ) ÷ 622] x 100 = -86.98%
Formula
Percentage change = [(81 - 622) / 622] x 100
Subtract the new number by the original number
81 - 622 = -541
-541 ÷ 622 = -0.8697749196141479
-0.8697749196141479 x 100 = -86.98%