284.34% is the change from 249 to 957
Calculation steps:
[( 957 - 249 ) ÷ 249] x 100 = 284.34%
Formula
Percentage change = [(957 - 249) / 249] x 100
Subtract the new number by the original number
957 - 249 = 708
708 ÷ 249 = 2.8433734939759034
2.8433734939759034 x 100 = 284.34%