-87.6% is the change from 242 to 30
Calculation steps:
[( 30 - 242 ) ÷ 242] x 100 = -87.6%
Formula
Percentage change = [(30 - 242) / 242] x 100
Subtract the new number by the original number
30 - 242 = -212
-212 ÷ 242 = -0.8760330578512396
-0.8760330578512396 x 100 = -87.6%