-1.99% is the change from 503 to 493
Calculation steps:
[( 493 - 503 ) ÷ 503] x 100 = -1.99%
Formula
Percentage change = [(493 - 503) / 503] x 100
Subtract the new number by the original number
493 - 503 = -10
-10 ÷ 503 = -0.019880715705765408
-0.019880715705765408 x 100 = -1.99%