34% is the change from 400 to 536
Calculation steps:
[( 536 - 400 ) ÷ 400] x 100 = 34%
Formula
Percentage change = [(536 - 400) / 400] x 100
Subtract the new number by the original number
536 - 400 = 136
136 ÷ 400 = 0.34
0.34 x 100 = 34%
Example