-58.57% is the change from 770 to 319
Calculation steps:
[( 319 - 770 ) ÷ 770] x 100 = -58.57%
Formula
Percentage change = [(319 - 770) / 770] x 100
Subtract the new number by the original number
319 - 770 = -451
-451 ÷ 770 = -0.5857142857142857
-0.5857142857142857 x 100 = -58.57%