-77.27% is the change from 242 to 55
Calculation steps:
[( 55 - 242 ) ÷ 242] x 100 = -77.27%
Formula
Percentage change = [(55 - 242) / 242] x 100
Subtract the new number by the original number
55 - 242 = -187
-187 ÷ 242 = -0.7727272727272727
-0.7727272727272727 x 100 = -77.27%