39.72% is the change from 287 to 401
Calculation steps:
[( 401 - 287 ) ÷ 287] x 100 = 39.72%
Formula
Percentage change = [(401 - 287) / 287] x 100
Subtract the new number by the original number
401 - 287 = 114
114 ÷ 287 = 0.397212543554007
0.397212543554007 x 100 = 39.72%