-26.34% is the change from 820 to 604
Calculation steps:
[( 604 - 820 ) ÷ 820] x 100 = -26.34%
Formula
Percentage change = [(604 - 820) / 820] x 100
Subtract the new number by the original number
604 - 820 = -216
-216 ÷ 820 = -0.2634146341463415
-0.2634146341463415 x 100 = -26.34%