121.29% is the change from 249 to 551
Calculation steps:
[( 551 - 249 ) ÷ 249] x 100 = 121.29%
Formula
Percentage change = [(551 - 249) / 249] x 100
Subtract the new number by the original number
551 - 249 = 302
302 ÷ 249 = 1.21285140562249
1.21285140562249 x 100 = 121.29%