-51.61% is the change from 186 to 90
Calculation steps:
[( 90 - 186 ) ÷ 186] x 100 = -51.61%
Formula
Percentage change = [(90 - 186) / 186] x 100
Subtract the new number by the original number
90 - 186 = -96
-96 ÷ 186 = -0.5161290322580645
-0.5161290322580645 x 100 = -51.61%