-51.53% is the change from 491 to 238
Calculation steps:
[( 238 - 491 ) ÷ 491] x 100 = -51.53%
Formula
Percentage change = [(238 - 491) / 491] x 100
Subtract the new number by the original number
238 - 491 = -253
-253 ÷ 491 = -0.515274949083503
-0.515274949083503 x 100 = -51.53%