-51.7% is the change from 704 to 340
Calculation steps:
[( 340 - 704 ) ÷ 704] x 100 = -51.7%
Formula
Percentage change = [(340 - 704) / 704] x 100
Subtract the new number by the original number
340 - 704 = -364
-364 ÷ 704 = -0.5170454545454546
-0.5170454545454546 x 100 = -51.7%