-79.2% is the change from 649 to 135
Calculation steps:
[( 135 - 649 ) ÷ 649] x 100 = -79.2%
Formula
Percentage change = [(135 - 649) / 649] x 100
Subtract the new number by the original number
135 - 649 = -514
-514 ÷ 649 = -0.7919876733436055
-0.7919876733436055 x 100 = -79.2%