-92.56% is the change from 242 to 18
Calculation steps:
[( 18 - 242 ) ÷ 242] x 100 = -92.56%
Formula
Percentage change = [(18 - 242) / 242] x 100
Subtract the new number by the original number
18 - 242 = -224
-224 ÷ 242 = -0.9256198347107438
-0.9256198347107438 x 100 = -92.56%