-90.26% is the change from 154 to 15
Calculation steps:
[( 15 - 154 ) ÷ 154] x 100 = -90.26%
Formula
Percentage change = [(15 - 154) / 154] x 100
Subtract the new number by the original number
15 - 154 = -139
-139 ÷ 154 = -0.9025974025974026
-0.9025974025974026 x 100 = -90.26%