-51.66% is the change from 422 to 204
Calculation steps:
[( 204 - 422 ) ÷ 422] x 100 = -51.66%
Formula
Percentage change = [(204 - 422) / 422] x 100
Subtract the new number by the original number
204 - 422 = -218
-218 ÷ 422 = -0.5165876777251185
-0.5165876777251185 x 100 = -51.66%