-79.6% is the change from 647 to 132
Calculation steps:
[( 132 - 647 ) ÷ 647] x 100 = -79.6%
Formula
Percentage change = [(132 - 647) / 647] x 100
Subtract the new number by the original number
132 - 647 = -515
-515 ÷ 647 = -0.7959814528593508
-0.7959814528593508 x 100 = -79.6%