-89.73% is the change from 185 to 19
Calculation steps:
[( 19 - 185 ) ÷ 185] x 100 = -89.73%
Formula
Percentage change = [(19 - 185) / 185] x 100
Subtract the new number by the original number
19 - 185 = -166
-166 ÷ 185 = -0.8972972972972973
-0.8972972972972973 x 100 = -89.73%