-21.4% is the change from 841 to 661
Calculation steps:
[( 661 - 841 ) ÷ 841] x 100 = -21.4%
Formula
Percentage change = [(661 - 841) / 841] x 100
Subtract the new number by the original number
661 - 841 = -180
-180 ÷ 841 = -0.2140309155766944
-0.2140309155766944 x 100 = -21.4%