198.15% is the change from 270 to 805
Calculation steps:
[( 805 - 270 ) ÷ 270] x 100 = 198.15%
Formula
Percentage change = [(805 - 270) / 270] x 100
Subtract the new number by the original number
805 - 270 = 535
535 ÷ 270 = 1.9814814814814814
1.9814814814814814 x 100 = 198.15%