-91.18% is the change from 204 to 18
Calculation steps:
[( 18 - 204 ) ÷ 204] x 100 = -91.18%
Formula
Percentage change = [(18 - 204) / 204] x 100
Subtract the new number by the original number
18 - 204 = -186
-186 ÷ 204 = -0.9117647058823529
-0.9117647058823529 x 100 = -91.18%