-21.71% is the change from 654 to 512
Calculation steps:
[( 512 - 654 ) ÷ 654] x 100 = -21.71%
Formula
Percentage change = [(512 - 654) / 654] x 100
Subtract the new number by the original number
512 - 654 = -142
-142 ÷ 654 = -0.21712538226299694
-0.21712538226299694 x 100 = -21.71%