191.3% is the change from 230 to 670
Calculation steps:
[( 670 - 230 ) ÷ 230] x 100 = 191.3%
Formula
Percentage change = [(670 - 230) / 230] x 100
Subtract the new number by the original number
670 - 230 = 440
440 ÷ 230 = 1.9130434782608696
1.9130434782608696 x 100 = 191.3%