-33.74% is the change from 821 to 544
Calculation steps:
[( 544 - 821 ) ÷ 821] x 100 = -33.74%
Formula
Percentage change = [(544 - 821) / 821] x 100
Subtract the new number by the original number
544 - 821 = -277
-277 ÷ 821 = -0.3373934226552984
-0.3373934226552984 x 100 = -33.74%