-47.75% is the change from 978 to 511
Calculation steps:
[( 511 - 978 ) ÷ 978] x 100 = -47.75%
Formula
Percentage change = [(511 - 978) / 978] x 100
Subtract the new number by the original number
511 - 978 = -467
-467 ÷ 978 = -0.4775051124744376
-0.4775051124744376 x 100 = -47.75%