-70.23% is the change from 813 to 242
Calculation steps:
[( 242 - 813 ) ÷ 813] x 100 = -70.23%
Formula
Percentage change = [(242 - 813) / 813] x 100
Subtract the new number by the original number
242 - 813 = -571
-571 ÷ 813 = -0.7023370233702337
-0.7023370233702337 x 100 = -70.23%