-8.6% is the change from 93 to 85
Calculation steps:
[( 85 - 93 ) ÷ 93] x 100 = -8.6%
Formula
Percentage change = [(85 - 93) / 93] x 100
Subtract the new number by the original number
85 - 93 = -8
-8 ÷ 93 = -0.08602150537634409
-0.08602150537634409 x 100 = -8.6%