-91.23% is the change from 228 to 20
Calculation steps:
[( 20 - 228 ) ÷ 228] x 100 = -91.23%
Formula
Percentage change = [(20 - 228) / 228] x 100
Subtract the new number by the original number
20 - 228 = -208
-208 ÷ 228 = -0.9122807017543859
-0.9122807017543859 x 100 = -91.23%