-63.41% is the change from 82 to 30
Calculation steps:
[( 30 - 82 ) ÷ 82] x 100 = -63.41%
Formula
Percentage change = [(30 - 82) / 82] x 100
Subtract the new number by the original number
30 - 82 = -52
-52 ÷ 82 = -0.6341463414634146
-0.6341463414634146 x 100 = -63.41%