-6.78% is the change from 487 to 454
Calculation steps:
[( 454 - 487 ) ÷ 487] x 100 = -6.78%
Formula
Percentage change = [(454 - 487) / 487] x 100
Subtract the new number by the original number
454 - 487 = -33
-33 ÷ 487 = -0.06776180698151951
-0.06776180698151951 x 100 = -6.78%