-29.94% is the change from 718 to 503
Calculation steps:
[( 503 - 718 ) ÷ 718] x 100 = -29.94%
Formula
Percentage change = [(503 - 718) / 718] x 100
Subtract the new number by the original number
503 - 718 = -215
-215 ÷ 718 = -0.2994428969359331
-0.2994428969359331 x 100 = -29.94%