-30.96% is the change from 617 to 426
Calculation steps:
[( 426 - 617 ) ÷ 617] x 100 = -30.96%
Formula
Percentage change = [(426 - 617) / 617] x 100
Subtract the new number by the original number
426 - 617 = -191
-191 ÷ 617 = -0.3095623987034036
-0.3095623987034036 x 100 = -30.96%