-34.3% is the change from 242 to 159
Calculation steps:
[( 159 - 242 ) ÷ 242] x 100 = -34.3%
Formula
Percentage change = [(159 - 242) / 242] x 100
Subtract the new number by the original number
159 - 242 = -83
-83 ÷ 242 = -0.34297520661157027
-0.34297520661157027 x 100 = -34.3%