163.64% is the change from 121 to 319
Calculation steps:
[( 319 - 121 ) ÷ 121] x 100 = 163.64%
Formula
Percentage change = [(319 - 121) / 121] x 100
Subtract the new number by the original number
319 - 121 = 198
198 ÷ 121 = 1.6363636363636365
1.6363636363636365 x 100 = 163.64%