-39.18% is the change from 564 to 343
Calculation steps:
[( 343 - 564 ) ÷ 564] x 100 = -39.18%
Formula
Percentage change = [(343 - 564) / 564] x 100
Subtract the new number by the original number
343 - 564 = -221
-221 ÷ 564 = -0.39184397163120566
-0.39184397163120566 x 100 = -39.18%