83.33% is the change from 300 to 550
Calculation steps:
[( 550 - 300 ) ÷ 300] x 100 = 83.33%
Formula
Percentage change = [(550 - 300) / 300] x 100
Subtract the new number by the original number
550 - 300 = 250
250 ÷ 300 = 0.8333333333333334
0.8333333333333334 x 100 = 83.33%