-30.72% is the change from 690 to 478
Calculation steps:
[( 478 - 690 ) ÷ 690] x 100 = -30.72%
Formula
Percentage change = [(478 - 690) / 690] x 100
Subtract the new number by the original number
478 - 690 = -212
-212 ÷ 690 = -0.3072463768115942
-0.3072463768115942 x 100 = -30.72%