-57.73% is the change from 343 to 145
Calculation steps:
[( 145 - 343 ) ÷ 343] x 100 = -57.73%
Formula
Percentage change = [(145 - 343) / 343] x 100
Subtract the new number by the original number
145 - 343 = -198
-198 ÷ 343 = -0.577259475218659
-0.577259475218659 x 100 = -57.73%