379.85% is the change from 134 to 643
Calculation steps:
[( 643 - 134 ) ÷ 134] x 100 = 379.85%
Formula
Percentage change = [(643 - 134) / 134] x 100
Subtract the new number by the original number
643 - 134 = 509
509 ÷ 134 = 3.798507462686567
3.798507462686567 x 100 = 379.85%