-88.54% is the change from 646 to 74
Calculation steps:
[( 74 - 646 ) ÷ 646] x 100 = -88.54%
Formula
Percentage change = [(74 - 646) / 646] x 100
Subtract the new number by the original number
74 - 646 = -572
-572 ÷ 646 = -0.8854489164086687
-0.8854489164086687 x 100 = -88.54%