-8.11% is the change from 185 to 170
Calculation steps:
[( 170 - 185 ) ÷ 185] x 100 = -8.11%
Formula
Percentage change = [(170 - 185) / 185] x 100
Subtract the new number by the original number
170 - 185 = -15
-15 ÷ 185 = -0.08108108108108109
-0.08108108108108109 x 100 = -8.11%