-99.08% is the change from 651 to 6
Calculation steps:
[( 6 - 651 ) ÷ 651] x 100 = -99.08%
Formula
Percentage change = [(6 - 651) / 651] x 100
Subtract the new number by the original number
6 - 651 = -645
-645 ÷ 651 = -0.9907834101382489
-0.9907834101382489 x 100 = -99.08%