-66.13% is the change from 809 to 274
Calculation steps:
[( 274 - 809 ) ÷ 809] x 100 = -66.13%
Formula
Percentage change = [(274 - 809) / 809] x 100
Subtract the new number by the original number
274 - 809 = -535
-535 ÷ 809 = -0.6613102595797281
-0.6613102595797281 x 100 = -66.13%