40.28% is the change from 283 to 397
Calculation steps:
[( 397 - 283 ) ÷ 283] x 100 = 40.28%
Formula
Percentage change = [(397 - 283) / 283] x 100
Subtract the new number by the original number
397 - 283 = 114
114 ÷ 283 = 0.4028268551236749
0.4028268551236749 x 100 = 40.28%