211.79% is the change from 212 to 661
Calculation steps:
[( 661 - 212 ) ÷ 212] x 100 = 211.79%
Formula
Percentage change = [(661 - 212) / 212] x 100
Subtract the new number by the original number
661 - 212 = 449
449 ÷ 212 = 2.1179245283018866
2.1179245283018866 x 100 = 211.79%