247.47% is the change from 198 to 688
Calculation steps:
[( 688 - 198 ) ÷ 198] x 100 = 247.47%
Formula
Percentage change = [(688 - 198) / 198] x 100
Subtract the new number by the original number
688 - 198 = 490
490 ÷ 198 = 2.474747474747475
2.474747474747475 x 100 = 247.47%