-57.45% is the change from 644 to 274
Calculation steps:
[( 274 - 644 ) ÷ 644] x 100 = -57.45%
Formula
Percentage change = [(274 - 644) / 644] x 100
Subtract the new number by the original number
274 - 644 = -370
-370 ÷ 644 = -0.5745341614906833
-0.5745341614906833 x 100 = -57.45%