You should probably be thinking in terms of absolute rate of change (volts per second or whatever) rather than rate of percentage change. In other words, think of the "10%" or whatever as being 10% of the full scale value, not of the current value.
You should probably be thinking in terms of absolute rate of change (volts per second or whatever) rather than rate of percentage change. In other words, think of the "10%" or whatever as being 10% of the full scale value, not of the current value.