83.13% is the change from 249 to 456
Calculation steps:
[( 456 - 249 ) ÷ 249] x 100 = 83.13%
Formula
Percentage change = [(456 - 249) / 249] x 100
Subtract the new number by the original number
456 - 249 = 207
207 ÷ 249 = 0.8313253012048193
0.8313253012048193 x 100 = 83.13%