-9.3% is the change from 527 to 478
Calculation steps:
[( 478 - 527 ) ÷ 527] x 100 = -9.3%
Formula
Percentage change = [(478 - 527) / 527] x 100
Subtract the new number by the original number
478 - 527 = -49
-49 ÷ 527 = -0.09297912713472485
-0.09297912713472485 x 100 = -9.3%