-90.2% is the change from 204 to 20
Calculation steps:
[( 20 - 204 ) ÷ 204] x 100 = -90.2%
Formula
Percentage change = [(20 - 204) / 204] x 100
Subtract the new number by the original number
20 - 204 = -184
-184 ÷ 204 = -0.9019607843137255
-0.9019607843137255 x 100 = -90.2%