-71.34% is the change from 991 to 284
Calculation steps:
[( 284 - 991 ) ÷ 991] x 100 = -71.34%
Formula
Percentage change = [(284 - 991) / 991] x 100
Subtract the new number by the original number
284 - 991 = -707
-707 ÷ 991 = -0.7134207870837538
-0.7134207870837538 x 100 = -71.34%