-51.75% is the change from 715 to 345
Calculation steps:
[( 345 - 715 ) ÷ 715] x 100 = -51.75%
Formula
Percentage change = [(345 - 715) / 715] x 100
Subtract the new number by the original number
345 - 715 = -370
-370 ÷ 715 = -0.5174825174825175
-0.5174825174825175 x 100 = -51.75%