188.92% is the change from 343 to 991
Calculation steps:
[( 991 - 343 ) ÷ 343] x 100 = 188.92%
Formula
Percentage change = [(991 - 343) / 343] x 100
Subtract the new number by the original number
991 - 343 = 648
648 ÷ 343 = 1.8892128279883382
1.8892128279883382 x 100 = 188.92%