299.4% is the change from 168 to 671
Calculation steps:
[( 671 - 168 ) ÷ 168] x 100 = 299.4%
Formula
Percentage change = [(671 - 168) / 168] x 100
Subtract the new number by the original number
671 - 168 = 503
503 ÷ 168 = 2.994047619047619
2.994047619047619 x 100 = 299.4%