-51.9% is the change from 343 to 165
Calculation steps:
[( 165 - 343 ) ÷ 343] x 100 = -51.9%
Formula
Percentage change = [(165 - 343) / 343] x 100
Subtract the new number by the original number
165 - 343 = -178
-178 ÷ 343 = -0.5189504373177842
-0.5189504373177842 x 100 = -51.9%