-66.83% is the change from 814 to 270
Calculation steps:
[( 270 - 814 ) ÷ 814] x 100 = -66.83%
Formula
Percentage change = [(270 - 814) / 814] x 100
Subtract the new number by the original number
270 - 814 = -544
-544 ÷ 814 = -0.6683046683046683
-0.6683046683046683 x 100 = -66.83%