104.37% is the change from 206 to 421
Calculation steps:
[( 421 - 206 ) ÷ 206] x 100 = 104.37%
Formula
Percentage change = [(421 - 206) / 206] x 100
Subtract the new number by the original number
421 - 206 = 215
215 ÷ 206 = 1.0436893203883495
1.0436893203883495 x 100 = 104.37%