-59.47% is the change from 644 to 261
Calculation steps:
[( 261 - 644 ) ÷ 644] x 100 = -59.47%
Formula
Percentage change = [(261 - 644) / 644] x 100
Subtract the new number by the original number
261 - 644 = -383
-383 ÷ 644 = -0.59472049689441
-0.59472049689441 x 100 = -59.47%