55.05% is the change from 198 to 307
Calculation steps:
[( 307 - 198 ) ÷ 198] x 100 = 55.05%
Formula
Percentage change = [(307 - 198) / 198] x 100
Subtract the new number by the original number
307 - 198 = 109
109 ÷ 198 = 0.5505050505050505
0.5505050505050505 x 100 = 55.05%