20.48% is the change from 249 to 300
Calculation steps:
[( 300 - 249 ) ÷ 249] x 100 = 20.48%
Formula
Percentage change = [(300 - 249) / 249] x 100
Subtract the new number by the original number
300 - 249 = 51
51 ÷ 249 = 0.20481927710843373
0.20481927710843373 x 100 = 20.48%