-26.31% is the change from 821 to 605
Calculation steps:
[( 605 - 821 ) ÷ 821] x 100 = -26.31%
Formula
Percentage change = [(605 - 821) / 821] x 100
Subtract the new number by the original number
605 - 821 = -216
-216 ÷ 821 = -0.2630937880633374
-0.2630937880633374 x 100 = -26.31%