-90.75% is the change from 930 to 86
Calculation steps:
[( 86 - 930 ) ÷ 930] x 100 = -90.75%
Formula
Percentage change = [(86 - 930) / 930] x 100
Subtract the new number by the original number
86 - 930 = -844
-844 ÷ 930 = -0.9075268817204301
-0.9075268817204301 x 100 = -90.75%