-92.17% is the change from 230 to 18
Calculation steps:
[( 18 - 230 ) ÷ 230] x 100 = -92.17%
Formula
Percentage change = [(18 - 230) / 230] x 100
Subtract the new number by the original number
18 - 230 = -212
-212 ÷ 230 = -0.9217391304347826
-0.9217391304347826 x 100 = -92.17%