-27.78% is the change from 702 to 507
Calculation steps:
[( 507 - 702 ) ÷ 702] x 100 = -27.78%
Formula
Percentage change = [(507 - 702) / 702] x 100
Subtract the new number by the original number
507 - 702 = -195
-195 ÷ 702 = -0.2777777777777778
-0.2777777777777778 x 100 = -27.78%