369.86% is the change from 73 to 343
Calculation steps:
[( 343 - 73 ) ÷ 73] x 100 = 369.86%
Formula
Percentage change = [(343 - 73) / 73] x 100
Subtract the new number by the original number
343 - 73 = 270
270 ÷ 73 = 3.6986301369863015
3.6986301369863015 x 100 = 369.86%