-73.91% is the change from 690 to 180
Calculation steps:
[( 180 - 690 ) ÷ 690] x 100 = -73.91%
Formula
Percentage change = [(180 - 690) / 690] x 100
Subtract the new number by the original number
180 - 690 = -510
-510 ÷ 690 = -0.7391304347826086
-0.7391304347826086 x 100 = -73.91%