-26.69% is the change from 828 to 607
Calculation steps:
[( 607 - 828 ) ÷ 828] x 100 = -26.69%
Formula
Percentage change = [(607 - 828) / 828] x 100
Subtract the new number by the original number
607 - 828 = -221
-221 ÷ 828 = -0.2669082125603865
-0.2669082125603865 x 100 = -26.69%