-51.43% is the change from 700 to 340
Calculation steps:
[( 340 - 700 ) ÷ 700] x 100 = -51.43%
Formula
Percentage change = [(340 - 700) / 700] x 100
Subtract the new number by the original number
340 - 700 = -360
-360 ÷ 700 = -0.5142857142857142
-0.5142857142857142 x 100 = -51.43%