137.28% is the change from 346 to 821
Calculation steps:
[( 821 - 346 ) ÷ 346] x 100 = 137.28%
Formula
Percentage change = [(821 - 346) / 346] x 100
Subtract the new number by the original number
821 - 346 = 475
475 ÷ 346 = 1.3728323699421965
1.3728323699421965 x 100 = 137.28%