21.25% is the change from 287 to 348
Calculation steps:
[( 348 - 287 ) ÷ 287] x 100 = 21.25%
Formula
Percentage change = [(348 - 287) / 287] x 100
Subtract the new number by the original number
348 - 287 = 61
61 ÷ 287 = 0.21254355400696864
0.21254355400696864 x 100 = 21.25%