-90.07% is the change from 151 to 15
Calculation steps:
[( 15 - 151 ) ÷ 151] x 100 = -90.07%
Formula
Percentage change = [(15 - 151) / 151] x 100
Subtract the new number by the original number
15 - 151 = -136
-136 ÷ 151 = -0.9006622516556292
-0.9006622516556292 x 100 = -90.07%