-58.7% is the change from 644 to 266
Calculation steps:
[( 266 - 644 ) ÷ 644] x 100 = -58.7%
Formula
Percentage change = [(266 - 644) / 644] x 100
Subtract the new number by the original number
266 - 644 = -378
-378 ÷ 644 = -0.5869565217391305
-0.5869565217391305 x 100 = -58.7%