-50.79% is the change from 697 to 343
Calculation steps:
[( 343 - 697 ) ÷ 697] x 100 = -50.79%
Formula
Percentage change = [(343 - 697) / 697] x 100
Subtract the new number by the original number
343 - 697 = -354
-354 ÷ 697 = -0.5078909612625538
-0.5078909612625538 x 100 = -50.79%