217.39% is the change from 207 to 657
Calculation steps:
[( 657 - 207 ) ÷ 207] x 100 = 217.39%
Formula
Percentage change = [(657 - 207) / 207] x 100
Subtract the new number by the original number
657 - 207 = 450
450 ÷ 207 = 2.1739130434782608
2.1739130434782608 x 100 = 217.39%