-65.91% is the change from 88 to 30
Calculation steps:
[( 30 - 88 ) ÷ 88] x 100 = -65.91%
Formula
Percentage change = [(30 - 88) / 88] x 100
Subtract the new number by the original number
30 - 88 = -58
-58 ÷ 88 = -0.6590909090909091
-0.6590909090909091 x 100 = -65.91%