847.62% is the change from 21 to 199
Calculation steps:
[( 199 - 21 ) ÷ 21] x 100 = 847.62%
Formula
Percentage change = [(199 - 21) / 21] x 100
Subtract the new number by the original number
199 - 21 = 178
178 ÷ 21 = 8.476190476190476
8.476190476190476 x 100 = 847.62%