-51.15% is the change from 696 to 340
Calculation steps:
[( 340 - 696 ) ÷ 696] x 100 = -51.15%
Formula
Percentage change = [(340 - 696) / 696] x 100
Subtract the new number by the original number
340 - 696 = -356
-356 ÷ 696 = -0.5114942528735632
-0.5114942528735632 x 100 = -51.15%