-89.89% is the change from 188 to 19
Calculation steps:
[( 19 - 188 ) ÷ 188] x 100 = -89.89%
Formula
Percentage change = [(19 - 188) / 188] x 100
Subtract the new number by the original number
19 - 188 = -169
-169 ÷ 188 = -0.898936170212766
-0.898936170212766 x 100 = -89.89%