-75.61% is the change from 82 to 20
Calculation steps:
[( 20 - 82 ) ÷ 82] x 100 = -75.61%
Formula
Percentage change = [(20 - 82) / 82] x 100
Subtract the new number by the original number
20 - 82 = -62
-62 ÷ 82 = -0.7560975609756098
-0.7560975609756098 x 100 = -75.61%