133.9% is the change from 351 to 821
Calculation steps:
[( 821 - 351 ) ÷ 351] x 100 = 133.9%
Formula
Percentage change = [(821 - 351) / 351] x 100
Subtract the new number by the original number
821 - 351 = 470
470 ÷ 351 = 1.339031339031339
1.339031339031339 x 100 = 133.9%