-31.29% is the change from 620 to 426
Calculation steps:
[( 426 - 620 ) ÷ 620] x 100 = -31.29%
Formula
Percentage change = [(426 - 620) / 620] x 100
Subtract the new number by the original number
426 - 620 = -194
-194 ÷ 620 = -0.31290322580645163
-0.31290322580645163 x 100 = -31.29%