-27.88% is the change from 703 to 507
Calculation steps:
[( 507 - 703 ) ÷ 703] x 100 = -27.88%
Formula
Percentage change = [(507 - 703) / 703] x 100
Subtract the new number by the original number
507 - 703 = -196
-196 ÷ 703 = -0.27880512091038406
-0.27880512091038406 x 100 = -27.88%