1283.87% is the change from 31 to 429
Calculation steps:
[( 429 - 31 ) ÷ 31] x 100 = 1283.87%
Formula
Percentage change = [(429 - 31) / 31] x 100
Subtract the new number by the original number
429 - 31 = 398
398 ÷ 31 = 12.838709677419354
12.838709677419354 x 100 = 1283.87%