-31.71% is the change from 968 to 661
Calculation steps:
[( 661 - 968 ) ÷ 968] x 100 = -31.71%
Formula
Percentage change = [(661 - 968) / 968] x 100
Subtract the new number by the original number
661 - 968 = -307
-307 ÷ 968 = -0.31714876033057854
-0.31714876033057854 x 100 = -31.71%