-25.7% is the change from 817 to 607
Calculation steps:
[( 607 - 817 ) ÷ 817] x 100 = -25.7%
Formula
Percentage change = [(607 - 817) / 817] x 100
Subtract the new number by the original number
607 - 817 = -210
-210 ÷ 817 = -0.25703794369645044
-0.25703794369645044 x 100 = -25.7%