-26.07% is the change from 821 to 607
Calculation steps:
[( 607 - 821 ) ÷ 821] x 100 = -26.07%
Formula
Percentage change = [(607 - 821) / 821] x 100
Subtract the new number by the original number
607 - 821 = -214
-214 ÷ 821 = -0.26065773447015833
-0.26065773447015833 x 100 = -26.07%