-33.66% is the change from 820 to 544
Calculation steps:
[( 544 - 820 ) ÷ 820] x 100 = -33.66%
Formula
Percentage change = [(544 - 820) / 820] x 100
Subtract the new number by the original number
544 - 820 = -276
-276 ÷ 820 = -0.33658536585365856
-0.33658536585365856 x 100 = -33.66%