-32.22% is the change from 810 to 549
Calculation steps:
[( 549 - 810 ) ÷ 810] x 100 = -32.22%
Formula
Percentage change = [(549 - 810) / 810] x 100
Subtract the new number by the original number
549 - 810 = -261
-261 ÷ 810 = -0.32222222222222224
-0.32222222222222224 x 100 = -32.22%