-97.4% is the change from 154 to 4
Calculation steps:
[( 4 - 154 ) ÷ 154] x 100 = -97.4%
Formula
Percentage change = [(4 - 154) / 154] x 100
Subtract the new number by the original number
4 - 154 = -150
-150 ÷ 154 = -0.974025974025974
-0.974025974025974 x 100 = -97.4%