-80.13% is the change from 151 to 30
Calculation steps:
[( 30 - 151 ) ÷ 151] x 100 = -80.13%
Formula
Percentage change = [(30 - 151) / 151] x 100
Subtract the new number by the original number
30 - 151 = -121
-121 ÷ 151 = -0.8013245033112583
-0.8013245033112583 x 100 = -80.13%