-59.43% is the change from 991 to 402
Calculation steps:
[( 402 - 991 ) ÷ 991] x 100 = -59.43%
Formula
Percentage change = [(402 - 991) / 991] x 100
Subtract the new number by the original number
402 - 991 = -589
-589 ÷ 991 = -0.5943491422805247
-0.5943491422805247 x 100 = -59.43%