-68.2% is the change from 849 to 270
Calculation steps:
[( 270 - 849 ) ÷ 849] x 100 = -68.2%
Formula
Percentage change = [(270 - 849) / 849] x 100
Subtract the new number by the original number
270 - 849 = -579
-579 ÷ 849 = -0.6819787985865724
-0.6819787985865724 x 100 = -68.2%