267.78% is the change from 270 to 993
Calculation steps:
[( 993 - 270 ) ÷ 270] x 100 = 267.78%
Formula
Percentage change = [(993 - 270) / 270] x 100
Subtract the new number by the original number
993 - 270 = 723
723 ÷ 270 = 2.6777777777777776
2.6777777777777776 x 100 = 267.78%