-60.99% is the change from 669 to 261
Calculation steps:
[( 261 - 669 ) ÷ 669] x 100 = -60.99%
Formula
Percentage change = [(261 - 669) / 669] x 100
Subtract the new number by the original number
261 - 669 = -408
-408 ÷ 669 = -0.6098654708520179
-0.6098654708520179 x 100 = -60.99%