187.79% is the change from 344 to 990
Calculation steps:
[( 990 - 344 ) ÷ 344] x 100 = 187.79%
Formula
Percentage change = [(990 - 344) / 344] x 100
Subtract the new number by the original number
990 - 344 = 646
646 ÷ 344 = 1.877906976744186
1.877906976744186 x 100 = 187.79%