107% is the change from 300 to 621
Calculation steps:
[( 621 - 300 ) ÷ 300] x 100 = 107%
Formula
Percentage change = [(621 - 300) / 300] x 100
Subtract the new number by the original number
621 - 300 = 321
321 ÷ 300 = 1.07
1.07 x 100 = 107%
Example