-16.38% is the change from 769 to 643
Calculation steps:
[( 643 - 769 ) ÷ 769] x 100 = -16.38%
Formula
Percentage change = [(643 - 769) / 769] x 100
Subtract the new number by the original number
643 - 769 = -126
-126 ÷ 769 = -0.16384915474642392
-0.16384915474642392 x 100 = -16.38%