-89.06% is the change from 649 to 71
Calculation steps:
[( 71 - 649 ) ÷ 649] x 100 = -89.06%
Formula
Percentage change = [(71 - 649) / 649] x 100
Subtract the new number by the original number
71 - 649 = -578
-578 ÷ 649 = -0.8906009244992296
-0.8906009244992296 x 100 = -89.06%