677.61% is the change from 67 to 521
Calculation steps:
[( 521 - 67 ) ÷ 67] x 100 = 677.61%
Formula
Percentage change = [(521 - 67) / 67] x 100
Subtract the new number by the original number
521 - 67 = 454
454 ÷ 67 = 6.776119402985074
6.776119402985074 x 100 = 677.61%