-57.59% is the change from 646 to 274
Calculation steps:
[( 274 - 646 ) ÷ 646] x 100 = -57.59%
Formula
Percentage change = [(274 - 646) / 646] x 100
Subtract the new number by the original number
274 - 646 = -372
-372 ÷ 646 = -0.5758513931888545
-0.5758513931888545 x 100 = -57.59%