70.25% is the change from 400 to 681
Calculation steps:
[( 681 - 400 ) ÷ 400] x 100 = 70.25%
Formula
Percentage change = [(681 - 400) / 400] x 100
Subtract the new number by the original number
681 - 400 = 281
281 ÷ 400 = 0.7025
0.7025 x 100 = 70.25%