-16.13% is the change from 186 to 156
Calculation steps:
[( 156 - 186 ) ÷ 186] x 100 = -16.13%
Formula
Percentage change = [(156 - 186) / 186] x 100
Subtract the new number by the original number
156 - 186 = -30
-30 ÷ 186 = -0.16129032258064516
-0.16129032258064516 x 100 = -16.13%