-71.19% is the change from 840 to 242
Calculation steps:
[( 242 - 840 ) ÷ 840] x 100 = -71.19%
Formula
Percentage change = [(242 - 840) / 840] x 100
Subtract the new number by the original number
242 - 840 = -598
-598 ÷ 840 = -0.7119047619047619
-0.7119047619047619 x 100 = -71.19%