-40.4% is the change from 151 to 90
Calculation steps:
[( 90 - 151 ) ÷ 151] x 100 = -40.4%
Formula
Percentage change = [(90 - 151) / 151] x 100
Subtract the new number by the original number
90 - 151 = -61
-61 ÷ 151 = -0.40397350993377484
-0.40397350993377484 x 100 = -40.4%