-29.09% is the change from 715 to 507
Calculation steps:
[( 507 - 715 ) ÷ 715] x 100 = -29.09%
Formula
Percentage change = [(507 - 715) / 715] x 100
Subtract the new number by the original number
507 - 715 = -208
-208 ÷ 715 = -0.2909090909090909
-0.2909090909090909 x 100 = -29.09%