87.75% is the change from 400 to 751
Calculation steps:
[( 751 - 400 ) ÷ 400] x 100 = 87.75%
Formula
Percentage change = [(751 - 400) / 400] x 100
Subtract the new number by the original number
751 - 400 = 351
351 ÷ 400 = 0.8775
0.8775 x 100 = 87.75%