-61.14% is the change from 669 to 260
Calculation steps:
[( 260 - 669 ) ÷ 669] x 100 = -61.14%
Formula
Percentage change = [(260 - 669) / 669] x 100
Subtract the new number by the original number
260 - 669 = -409
-409 ÷ 669 = -0.6113602391629297
-0.6113602391629297 x 100 = -61.14%