-90.78% is the change from 933 to 86
Calculation steps:
[( 86 - 933 ) ÷ 933] x 100 = -90.78%
Formula
Percentage change = [(86 - 933) / 933] x 100
Subtract the new number by the original number
86 - 933 = -847
-847 ÷ 933 = -0.9078242229367631
-0.9078242229367631 x 100 = -90.78%