-46.76% is the change from 648 to 345
Calculation steps:
[( 345 - 648 ) ÷ 648] x 100 = -46.76%
Formula
Percentage change = [(345 - 648) / 648] x 100
Subtract the new number by the original number
345 - 648 = -303
-303 ÷ 648 = -0.4675925925925926
-0.4675925925925926 x 100 = -46.76%