-33.66% is the change from 814 to 540
Calculation steps:
[( 540 - 814 ) ÷ 814] x 100 = -33.66%
Formula
Percentage change = [(540 - 814) / 814] x 100
Subtract the new number by the original number
540 - 814 = -274
-274 ÷ 814 = -0.3366093366093366
-0.3366093366093366 x 100 = -33.66%