-90.52% is the change from 675 to 64
Calculation steps:
[( 64 - 675 ) ÷ 675] x 100 = -90.52%
Formula
Percentage change = [(64 - 675) / 675] x 100
Subtract the new number by the original number
64 - 675 = -611
-611 ÷ 675 = -0.9051851851851852
-0.9051851851851852 x 100 = -90.52%