278.31% is the change from 249 to 942
Calculation steps:
[( 942 - 249 ) ÷ 249] x 100 = 278.31%
Formula
Percentage change = [(942 - 249) / 249] x 100
Subtract the new number by the original number
942 - 249 = 693
693 ÷ 249 = 2.783132530120482
2.783132530120482 x 100 = 278.31%