-92.59% is the change from 243 to 18
Calculation steps:
[( 18 - 243 ) ÷ 243] x 100 = -92.59%
Formula
Percentage change = [(18 - 243) / 243] x 100
Subtract the new number by the original number
18 - 243 = -225
-225 ÷ 243 = -0.9259259259259259
-0.9259259259259259 x 100 = -92.59%