51.75% is the change from 400 to 607
Calculation steps:
[( 607 - 400 ) ÷ 400] x 100 = 51.75%
Formula
Percentage change = [(607 - 400) / 400] x 100
Subtract the new number by the original number
607 - 400 = 207
207 ÷ 400 = 0.5175
0.5175 x 100 = 51.75%