-7.1% is the change from 183 to 170
Calculation steps:
[( 170 - 183 ) ÷ 183] x 100 = -7.1%
Formula
Percentage change = [(170 - 183) / 183] x 100
Subtract the new number by the original number
170 - 183 = -13
-13 ÷ 183 = -0.07103825136612021
-0.07103825136612021 x 100 = -7.1%