-92.15% is the change from 242 to 19
Calculation steps:
[( 19 - 242 ) ÷ 242] x 100 = -92.15%
Formula
Percentage change = [(19 - 242) / 242] x 100
Subtract the new number by the original number
19 - 242 = -223
-223 ÷ 242 = -0.9214876033057852
-0.9214876033057852 x 100 = -92.15%