209.95% is the change from 221 to 685
Calculation steps:
[( 685 - 221 ) ÷ 221] x 100 = 209.95%
Formula
Percentage change = [(685 - 221) / 221] x 100
Subtract the new number by the original number
685 - 221 = 464
464 ÷ 221 = 2.0995475113122173
2.0995475113122173 x 100 = 209.95%