-80.39% is the change from 153 to 30
Calculation steps:
[( 30 - 153 ) ÷ 153] x 100 = -80.39%
Formula
Percentage change = [(30 - 153) / 153] x 100
Subtract the new number by the original number
30 - 153 = -123
-123 ÷ 153 = -0.803921568627451
-0.803921568627451 x 100 = -80.39%