-89.53% is the change from 611 to 64
Calculation steps:
[( 64 - 611 ) ÷ 611] x 100 = -89.53%
Formula
Percentage change = [(64 - 611) / 611] x 100
Subtract the new number by the original number
64 - 611 = -547
-547 ÷ 611 = -0.8952536824877251
-0.8952536824877251 x 100 = -89.53%