-45.53% is the change from 503 to 274
Calculation steps:
[( 274 - 503 ) ÷ 503] x 100 = -45.53%
Formula
Percentage change = [(274 - 503) / 503] x 100
Subtract the new number by the original number
274 - 503 = -229
-229 ÷ 503 = -0.4552683896620278
-0.4552683896620278 x 100 = -45.53%