-30.63% is the change from 617 to 428
Calculation steps:
[( 428 - 617 ) ÷ 617] x 100 = -30.63%
Formula
Percentage change = [(428 - 617) / 617] x 100
Subtract the new number by the original number
428 - 617 = -189
-189 ÷ 617 = -0.3063209076175041
-0.3063209076175041 x 100 = -30.63%