-58.07% is the change from 644 to 270
Calculation steps:
[( 270 - 644 ) ÷ 644] x 100 = -58.07%
Formula
Percentage change = [(270 - 644) / 644] x 100
Subtract the new number by the original number
270 - 644 = -374
-374 ÷ 644 = -0.5807453416149069
-0.5807453416149069 x 100 = -58.07%