-40% is the change from 710 to 426
Calculation steps:
[( 426 - 710 ) ÷ 710] x 100 = -40%
Formula
Percentage change = [(426 - 710) / 710] x 100
Subtract the new number by the original number
426 - 710 = -284
-284 ÷ 710 = -0.4
-0.4 x 100 = -40%
Example