-91.6% is the change from 238 to 20
Calculation steps:
[( 20 - 238 ) ÷ 238] x 100 = -91.6%
Formula
Percentage change = [(20 - 238) / 238] x 100
Subtract the new number by the original number
20 - 238 = -218
-218 ÷ 238 = -0.9159663865546218
-0.9159663865546218 x 100 = -91.6%