669.23% is the change from 39 to 300
Calculation steps:
[( 300 - 39 ) ÷ 39] x 100 = 669.23%
Formula
Percentage change = [(300 - 39) / 39] x 100
Subtract the new number by the original number
300 - 39 = 261
261 ÷ 39 = 6.6923076923076925
6.6923076923076925 x 100 = 669.23%